> How about the ability to install multiple versions of IE on Windows? http://blogs.msdn.com/b/ie/archive/2011/02/04/testing-multiple-versions-of-ie-on-one-pc.

> How about the ability to install multiple versions of IE on Windows? http://blogs.msdn.com/b/ie/archive/2011/02/04/testing-multiple-versions-of-ie-on-one-pc.aspx http://blogs.msdn.com/b/ie/archive/2011/02/04/testing-multip... As you might expect it's using virtualization, but nothing that isn't included in Windows 7 Professional and up.